Trimming device



4 Aug. 2, 1932. E RE 1,869,369

TRIMMING DEVICE Filed March 28, 1930 3 Sheets-Sheet 1 2, 1932- F.-E. EDGREN 1,869,369

TRIMMING DEVICE Filed March 28, 1930 3 Sheets-Sheet 2 s. O m A if mwgy Q F. E. EDGREN TRIMMING DEVICE Aug. 2, 1932.

Filed March 28, 1930 DH tne 1% Patented Aug. 2, 1 932 e I l V "UNITE STATES @FFECE FRED n. EDcRnN, orjcnlcaoogxnmnois Q r If i i TRIMMING DEVICE i Application filed March 28', 1930. Seriak 4N0; 1439,58 1; V

My invention relates to a cutting 'orxtrim-' inner i-straightedge sideor 'side opposite to ming device more especially intended for thattshown in Figure 2; with the trimmer trimming wall paper and adapted for use 1nnon-cuttingposition. I

I with the usual straightedges employed by Figure' 4: is a longitudinal sectional elevav 5 wall paper trimmers and hangers. tlon taken substantially on the line 41-4 of My invention has for its object the provi- F igure 1,-asviewed 'bythe arrows. p

sion of a device whereby a proper bearing on Figure 5 is. a sectional view. taken su'bthe straightedge will-be provided so as to Stantia'llyon .theline 5- 5 of Figure 4;, as

maintain the cutting disc or blade in proper .viewedbythe arrows.

V T in uniform and close relation with the straight- Figure 6 is azvertical cross-section taken g 5 edge during cutting operations. substantially on the line 66 of Figure 2- Another object ofmy invention is to proas viewed bythe arrows. vide a device whereby adjustment of the Figure? is a detail sectional view taken subhearing may be'readily' made to adapt the stantiallypn the line 74-7 of Figure '3, as device to variations in the thickness of viewed by the arrows. 4 p 460 straightedges so as to properly position the Figure 8-is a perspective view of the bear- 1 device with its cutting disc orblade relative ingrollercarrying spindle employed on the to the paper to be trimmed. trimmer illustrated in Figure 1. I

Another objectof my inventionis to .pro- 7 Figure 9 is atop plan view-of a portion of 2r. vide a device wherein adjustment of the cutthe trlmmer showing a-modifiedvv form,

ting disc or blade relative to the vertical side I F igure' '10 is a sectional View of the modik or edge of the straightedge may be readily fled forn and takenon the line, 1 0-1O of made; while at the same time providing a F1gure.9,as viewed by the arrows.

cutting disc or blade mounting which per- Figure-11 is a vertical sectional view taken :in mits of easy removal or replacementof the substantially on the line l1 l1-ofFigureldym disc or blade when occasion requires. U vlooking inthe direction ofthe arrows. Y

A further object of the invention is-to pro- Figure 12 is a pe'rspectiveview of the bearvide a device wherein the outer shell or blade ing roller carrying spindle employed in the carrying case may have proper up and down modified form of the device shown in .Fig-

fiv movement and raising or tilting of the end of me 9. .:;;7

the trimmer from the straightedgetrack pre- The device comprises ,an inner case or vented during cutting or trimming opera-"-,hody\-member l5-having a vertical portion tion 16, which is offset intermediate of the ends; The objects and advantages of myxinveir. as;sl1own-at.-17,:in Figure 5., and a laterally 93 tion will be readily comprehended from the disposed base portion 18. (see Figure 6);?80

detailed description ofthe accompanying .the outer longitudinal edge whereof prodrawings, wherein: vided with a rightv angular strip 19 which is Figure 1 is a top plan view of myimproved preferably removably securedto the base portrimmer shown applied to a straightedge of tion asshorwn. a i which only a portion is shown. w The: device is---particularly intended for-e Figure 2 shows the trimmer in elevation as use with theusual straightedge. shown at A, I applied to a straightedge, as viewed from the which is provided .with a channel or groove outer or trimming side. p V adjacentto one. longitudinal edgewhich lat- Figure 3 shows the trimmer in elevation, teris provided'withan angularmetalstrip f, applied to a straightedge, as viewed from the .20 oneside whereofioverhangs the groove so as to provide a guideway for the device, The overhanging portion of the strip 20 is en'- gaged by the right angular strip 19, as shown more clearly in Figure 6, thereby'guiding the 1 device in its travel, lengthwise of the straight edge during cutting operations. 7 I

' The vertical wall portion 16, at opposite ends of the inner body member, is extended downwardly, beneath the lateral base portion 18, as shown at 21, 21; and these portions are intended to lap the strip 20 at the Cutting ge ofthestrai-ghtedge as sh in Figure v ofjthe portion 24; the pin 25 being inserted in the hub 22 and held against"accidental movement by the set-screw 27; while the pin 26 is intended'to receive the bearing roller 28 which rides along the top of the straightedge A, as shown in Figures ,1, 6 and 7, 1

' The end "of pin 26 is shown provided with v a threaded socket 29 for the purpose of receiving the screw 30 whereby the roller 28 is held in place; a suitable washer being em ployed as shown at 31, so as to-allow the roller to freely rotate on the pin 26. V i The inner case or member 15, by reason of the depending wall portions 21, 21, the straightedge track engaging angle member 19 and the inwardly extending bearing roller 28 will be firmly held onthe straightedge against any sidewise tilting movement, thus ensuring a straight, true cut'being made by I screws into the threaded end of the hub 40.

the device. A

With the eccentric bearing 23 for the roller,

' it is apparent that vertical adjustment'of the bearing roller maybe made upon releasing set-screw 27 so' as to allow the roller carrying pin or portion 26' to be moved through a vertically disposed are so as to either move the roller downward or upward as desired, thus adapting the device to straightedges varying in thickness.

, The inner member 15, at opposite ends, is provided with the upwardly disposed and somewhat arcuate slots 32, 32, which freely receive the screws 33, which also extend through the ends of links 34,'whose opposite ends are oscillatably secured to the inner member 15 by the screws 35.

The pins or screws 33 freely ride in the 1 slots 32 and have their threaded ends screwed movement. The member 36, at' top, is provvided with a suitable hand engaging portion,

as at 37. y

In order to yieldingly hold the outer. case or hand operated member upwardly and therefore also to return it to normal position, one or more suitable springs are em- 6 ployed, as for example shown at 38, 38; the

springs being coiled about the screws 35,

' and one end bearing on the lateral bodyportion18 of the inner member 15 while the other end of each spring bears upwardly against the respective screws '33, as shown in Figures-321ml 4. With the outercase or member secured'to the inner case or member through the medium of the links 34, 34, it is evidentthat the outer case will be compelled tomove uniformlyand that a tilting of the outer case or member by pressure at one end will be prevented.

The outer case 36, intermediate of its ends,

and coincident with the ofisetportion 17 of the inner case 15, 1s alsooffset outwardly as blade receiving chambera Theintermediate offset wall portion 39, adjacent to the lower edge, is provided with an outwardly disposed hub 4O which is adapted to receive and provide properbearing for the arbor 41. The arbor 41 at its inner end has the cutting bl-adeor disc 42 secured thereto by means of screw 43, so that the disc will rotate with. arbor 41. The outer end of the arbor 41 is reduced, as shown at 44, and extends through an adjusting thimble 45, and theouter end of this reduced portion has a threaded socket toreceive screw 46 which maintains'the operative relation between the arbor 41 and the thimble 45L I v Thimble 45 is externally threaded and screwed further into the hub 40, the arbor 41 with the cutting disc 42 will be forced towardrthe inner case or member15 and. therefore bring the cutting disc 42 int-o intimate relation with the outer longitudinal edge of the straightedge. Upon screwing the thimble 45 outwardly, the arbor (by reason of screw 46) with the cutting blade, will move outwardly and therefore away from the straightedge. V g Y I 7 In order tha't'the cutting disc 42 may be easily removed for sharpening or replaced with anew blade, without necessity of dismantling the entire device, I show the inner case or member 15, at a point coincident with the blade or disc holding screw 43,when the outer hand grasping member 36 is in its normal'raised position, provided with a screw-driver receiving opening 47,"see Figure 4. V v v p The hub 40 and the -arbor 41'are alsoiproiii vided with small pin-receiving holes at 48 and 49, see Figures 1 and 5, lVhen it is desired to remove the disc as above mentioned, the arbor 41 is positioned so as to bring its hole 49 into register with the hole 48 in the hub and a nail or pin is inserted so as to hold the arbor against rotation while unscrewing or screwing the screw 43.

In operation, the device is applied to the track of the straightedge, as shown and de-'v scribed; the bearing roller is adjusted by turning the eccentric trunnion or spindle 23 in keeping with the thickness of the straightedge, so as to have the roller or bearing element 28 bear on the straightedge and thus prevent any sidewise movement or tilting of the device. The thimble is also screwed inwardly or outwardly, in keeping with the thickness or width of the straightedge track so as to position the cutting disc. or blade flush with the outer edge of the straightedge. Having placed the straightedge with the device in position on the paper or material to be trimmed, the operator then depresses the outer case 86 so as to bring the disc into contact with the material and slides the device lengthwise of the straight edge track. As soon as the operator releases pressure on the case 36, the latter with the cutting disc 42 will move upwardly out of cutting position through the action of the springs 38.

In Figures 9 to 12, I show a modified form of the bearing portion of the device and the method of adjustment.

The portion of the inner case or member 50 in general respects is similar to member 15 previously described, except that instead of the hub 22, the member 50 is provided with the vertical boss formation 51 which is merely attached at its bottom 52 to member 50, as shown in Figure 11. The boss 51 is provided with an elongated vertical slot 53 of rectangular shape; and the upper end of the boss formation is split to provide the two slightly spaced lobes 54, 54, having registering threaded holes to receive the screw 55 whereby the two portions of the boss formation may be drawn together.

The slot 53 is intended to receive the squared shank 56 of the spindle 57, shown in Figure 12, having the enlarged intermediate portion shown, with the opposite side of the intermediate portion provided with the roller receiving trunnion 58 which, like spindle 23, has its outer end provided with a tapped socket to receive the screw 30, whereby the bearing roller 28 is secured in place.

As is apparent from the construction shown, vertical adjustment of the bearing may be accomplished by loosening screw 55, allowing the two portions of the boss to spread, thus releasing the trunnion and permitting the latter to be moved upwardly or downwardly as required to position the roller so it will bear firmly on the straightedge.

have also shown the device provided with a pair of springs'to yieldingly hold the outer case in normal position, but it is apparent that modifications may be made without departing from the spirit of my invention which has bee'n'described in termsemployed merely as terms of description and not as terms of limitation. 1

WVhat I claim is:

1. A trimmer of the character described comprising a straightedge track engaging member; a cutting blade carryingmember; a pair of oscillatably mounted links on the first member whereby the second member is movv ably secured to the firstmember; means whereby the second member is yieldingly held in raised position; and means, extending laterally from the first member, adapted to have bearing relation with the upper face of the straightedge.

2. A trimmer of the character described comprising a straightedge track engaging member; a cutting blade carrying member; means whereby the two members are operatively secured together and the second mentioned member made to move in a downwardly slanting direction; and means disposed laterally from the first member and arranged 1 to engage the upper face of the straightedge, said means being vertically adjustable.

3. A trimmer of the character described comprising a straightedge track engaging member provided on its outer side with a lateral extension; straightedge engaging means adjustably mo'untedin said extension; a cutting blade carrying member arranged in lapping relation with the side of the first mentioned member; a pair of links pivotally connected to both of said members whereby uniform movement of the second member is induced and means whereby the second member 18 returned to raised position.

4. A device of the character described comprising a straightedge engaging member having a horizontally extending base adapted to interengage with the straightedge track and a vertical portion disposed beneath said horizontal base to lap the outer edge of the straightedge, said member also having a laterally disposed and vertically adjustable roller carrying spindle; a cutting blade carrying member arranged in lapping relation with the outer side of the first mentioned member; a pair of links arranged at opposite ends of the device and each pivotally connected to both of said members whereby'uniform movement of the second member is b induced; and spring means whereby the secondmember vis automatically returned .to

vided with ahorizontal base disposed toward raised position,

5. A device of the character described C011): prising a straightedge engaging member proone side and adapted to interengage with the straightedge track and having portions de-- pending beneath the base at one side adapted to lap the outer edge of the straightedge, the

= sidewall of the member above the base and adjacent opposite ends having verticall disposed slots extending therethrough am: also provided with a lateral extension; a straightedge engaging element adjustably' secured to said extension; a hand operated member arranged in lapping relation with the outer side of the first member; a pair of links pivotally secured at the ends to both of said members with the pivotal connection for the second member extending through the vertical slots of the first member; spring means for yieldlngly holding the second member 1n raised position; a cutting disc carrying arbor rotatably mount-ed in the side wall of the second member; and means whereby lengthwise adjustment of the arbor may be made and the latter held in its adjusted positions. e 6. In a device of the character described,

a depressible hand operated member pro- 7 vided with a laterally extending hub, the outer end'whereof is internally threaded; an arbor rotatably mounted in said hub and having a reduced outer end provided with a tapped opening in said end; a cutting disc removably secured to the inner end of said arbor so asto rotate with the arbor; an externally threaded thimble arranged on the reduced outer end of the arbor and adjustably screwing into the threaded outer end of the hub and, a threaded member in the tapped opening in the reduced end of the arbor and engaging the outer end of said thimble whereby lengthwise in and out of adjustment of the arbor through rotation of the thimble may be made and the arbor held against lengthwise movement.

FRED E. EDGREN. 

